Describe the bug

When using an image URL like https://bundlephobia.com/api/stats-image?name=convert&version=1.0.1&wide=true for a version that isn't published the image returns a placeholder, but the placeholder gets cached. After the version is published the placeholder image stays cached.

To Reproduce

Visit an image URL for a version that didn't exist at image generation time.

This package could be used to enhance the readability of a lot of our tests:
https://github.com/JamieMason/expect-more/tree/master/packages/expect-more-jest/

Is your feature request related to a problem? Please describe.

Not related to a problem

Describe the solution you'd like

We opened #808 to discuss how we might use GitHub actions. At the time, this repo didn't have actions enabled. Now that it does, we should try them out for some of the things in that thread.

_Edit from @arschles - we have focused this issue to just the twitte

There are about ~240 URLs and licenses listed at https://directory.fsf.org/wiki?title=Category:License
We should:

1. ensure that we can detect all of them
2. ensure that we can detect their URL
   We should also add as an "other_urls" ech URL to the corresponding license YAML

fsf-license-urls.txt

It's very common for people to create a venv or .venv folder, using virtualenv or python -m venv, alongside the requirements.txt file for Python

    'venv requirements.txt'       # virtualenv (python)
    '.venv requirements.txt'      # virtualenv (python)

If CPM_SOURCE_CACHE is set to an empty string, CPM fails with file DOWNLOAD error: cannot create directory '/cpm' - Specify file by full.

The code at

https://github.com/oss-review-toolkit/ort/blob/fd1b62a799523b55871cd04001ddfe1e6262da0f/analyzer/src/main/kotlin/managers/Stack.kt#L113-L140

can be simplified now that Stack 2.3.1 supports ls dependencies json.